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Analysis and Modeling of an Electronically Controlled Pneumatic Hydraulic Valve for an Automotive Engine
Technical Paper
2006-01-0042
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This paper addresses the design and detailed modeling of a novel electronically controlled, pneumatic/hydraulic valve actuator (EPVA) for both the engine intake and engine exhaust valves. The valve actuator's main function is to provide variable valve timing and variable lift in an automotive engine. The design of the combination of pneumatic and hydraulic mechanisms allows the system to operate under low pressure with an energy saving mode. A system dynamics analysis is provided and is followed by a mathematical model. This modeling approach uses the Newton's law, mass conservation and thermodynamic principles. The air compressibility and liquid compressibility in the hydraulic latch are modeled. The discontinuous nonlinearity of the compressible flow due to choking is carefully considered. Provision is made for the nonlinear motion of the mechanical components due to the physical constraints. Validation experiments were performed on a Ford 5.4 liter 4-valve V8 engine head with different air supply pressures and different solenoid pulse inputs. Results of the experiments were satisfactory and the simulation responses agreed with the experimental results.
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Authors
Citation
Ma, J., Schock, H., Carlson, U., Hoglund, A. et al., "Analysis and Modeling of an Electronically Controlled Pneumatic Hydraulic Valve for an Automotive Engine," SAE Technical Paper 2006-01-0042, 2006, https://doi.org/10.4271/2006-01-0042.Also In
References
- Turner J.W.G. Bassett M.D. Pearson R.J. Pitcher G. Douglas K.J. “New Operating Strategies Afforded by Fully Variable Valve Trains” SAE International 2004-01-1386 2004 Society of Automotive Engineers World Congress Detroit, MI April 2004
- Sugimoto Chihaya Sakai Hisao Umemoto Atsushi Shimizu Ya-suo Ozawa Hidetaka “Study on Variable Valve Timing System Using Electromagnetic Mechanism” SAE International 2004-01-1869 2004 Society of Automotive EngineersWorld Congress Detroit, MI April 2004
- Theobald Mark A. Lequesne Bruno Henry Rassem R. “Control of Engine Load via Electromagnetic Operating Actuator” SAE paper number 940816 1994
- Pischinger F. Kreuter Rassem P. “Electromagnetically Operating Actuator” U.S. Patent number 4,455,543 June 19 1984
- Lenz H.P. Geringer B. Smetana G. “Initial Test Results of an Electro-Hydraulic Variable Valve Actuation System on a Firing Engine” SAE paper number 890678 1989
- Richeson W.E. Erickson F.L. “Pneumatic Actuator with Permanent Magnet Control Valve Latching” U. S. Patent number 4,852,528 August 1 1989
- Watson John P. Wakeman Russell J. “Simulation of a Pneumatic Valve Actuation System for Internal Combustion Engine” SAE International 2005-01-0771 2005 Society of Automotive Engineers World Congress Detroit, MI April 2005
- Bobrow James E. McDonell Brian W. “Modeling and Control of a Variable Valve Timing Engine” Proceedings of the American Control Conference Chicago, IL June 2000
- Tressler J.M. Clement T. Kazerooni H. Lim M. “Dynamic Behavior of Pneumatic Systems for Lower Extremity Extenders” Proceedings of the 2002 IEEE International Conference on Robotics & Automation Washington, D.C. May 2002
- Richer Edmond Hurmuzlu Yildirim “A High Performance Pneumatic Force Actuator System: Part I- Nonlinear Mathematical Mode” Transactions of the ASME 122 416 425 September 2000
- Thomson William T. Theory of vibration with applications” 5th Prentice Hall Upper Saddle River, New Jersey 1998
- Cengel Y.A. Boles M.A. “Thermodynamics: An Engineering Approach” McGraw-Hill New York, N.Y. 1994
- Massey B.S. “Mechanics of fluids” Wokingham Berkshire, England 1983
- Al-Ibrahim A.M. Otis D.R. “Transient Air Temperature and Pressure Measurement During the Charging and Discharging Processes of an Actuating Pneumatic Cylinder” Proceedings of the 45th National Conference on Fluid Power 1992
- Schuder C.B. Binder R.C. “The Response of Pneumatic Transmission Lines to Step Inputs” ASME Journal, Basic Engineering 81 578 584 1959
- Hullender D.A. Woods R.L. “Modeling of Fluid Control Components” Proceeding of the First Conference on Fluid Control and Measurement , FLUCOME '85 Pregamon Press London 1985
- Ben-Dov D. Salcudean S.E. “A Force-Controlled Pneumatic Actuator” IEEE Transactions on Robotics and Automation 11 6 906 911 1995
- Heywood John B. “Internal Combustion Engine Fundementals” McGraw-Hill Singapore 1988
- Watson John P. Wakeman Russell J. “Modeling, Identification, and Control of a Pneunatically Actuated Force Controllable Robot” IEEE Transactions on Robotics and Automation 14 5 October 1998
- Hougen J.O. Martin O.R. Walsh R.A. “Dyanmics of Pneumatic Transmission Lines” Energy Conservation Management 35 1 61 77 1963